Korean J Pathol.
1994 Oct;28(5):544-546.
Superficial Angiomyxoma: A case report
- Affiliations
-
- 1Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
- 2Department of Pathology, Kyungpook National Uiversity College of Medicine, Taegu, Korea.
Abstract
- Superficial angiomyxoma is a comparatively rare dermal and subcutaneous tumor. We report a case of superficial angiomyxoma of the thumb in view of its rarity and typical light and electronmicroscopic features. The patient was a 46-year-old male. who presented with an asymptomatic, slowly enlarging mass that developed in the left thumb over the 5 years. He had a history of trauma and electric burn in the same area 20~30 years ago. Simple X-ray and magnetic resonance imaging revealed 35x30mm, mass with destruction of distal phalangeal bone. On operation, the lesion was moderately well circumscribed and soft with lobulated nodules that elevated the overlying skin and destroyed the underlying bone. The cut surface of the mass was glistening and slimy. The mass was whitish gray and lobulated. Bony involvement was not present. Microscopically, the tumor was composed of stellated and spindle shaped stromal cells which were scattered throughout myxoid ground substance. Neither nuclear hyperchromasia nor plemorphisam was present. Small to medium sized thin walled blood vessels were scattered. There was a scanty infiltrate of inflammatory cells. The S-100 protein immunostaining was negative in tumor cells. On electron microscopy, the cytoplasm of the stromal cells contained well developed rough ednoplasmic reticulums and other features that indicated differentiation toward fibroblasts.
